Motion picture projector



Sept. 3, 1940. M. sAssoLL MOTION PICTUREv PROJECTGR Filed OCT.. 2, 1937Patentedv Sept. 3, 1940 UNITED STATES PATENT OFFICE This inventionrelates to a small motion picture projector, particularly intended toserve as a toy for children.

One ofthe objects of the invention is to providea toy cinema which ischeap, safe in operation and durable.

A further object is to provide a new apparatus involving simple motions.l

Another particular object of the invention is to lprovide an apparatusin which a film carries out a slow and steady longitudinal motion andsimultaneously a rapid intermittent transverse motion and passes througha fixed non-diaphragmed l light ray.

vide a projector and a lm on which thecharac ters are distributed over`three or more superposed rows of pictures which are projected bytransverse motion of the longitudinally running nlm.

Still another object is to provide a projector for a perforated ornon-perforated film having half the width of the usual lm, thissubstandard film, furthermore; requiring a long time for projection andbeing preferably so short, say, 10 cm., that it can be mailed in anenvelope without being rolled. Owing to the small consumption ofmaterial and its production from standard lm, such a lm isextraordinarily cheap vBy way of example, one embodiment `of theinvention is illustrated in the accompanying drawing, in which Figure 1is a vertical longitudinal central section of the projector; Fig. 2,. afront view of the nlm carrier; Fig. 3, a section on the line III-i111 ofIIiig.` 1; Fig. 4, a detail view; and Fig. 5, a View on an enlargedscale of a piece of standard film subdivided into two standard films,with three rows of pictures 011 the lower lm. `Referring to the drawing,in the casing I a plate 2 is inserted from below which abuts againstprojections 3 of the casing I and is detachably secured thereto by meansYoi' screws, etc. AThe platel 2 serves for supporting the opticalequipment comprising an incandescentlamp 5 disposed in an attachment 4of the plate and the lenses 6. Below the -plate 2 a space 1 accommodatesa dry battery; a transformer, etc.l One pole ofthis source of current isdirectly connected by the line' 8 to the socket 9 and the other polejStill another object of the invention is to pro.

In the upper space of the casing I the mechanism for moving a film I2 islocated, which is preferably inserted from below. The mechanismcomprises a supporting yoke I5 which is secured to the wall of thecasing by means of the anges 5 I3 and screws I4 and from which a guideplate I6 having a window .Il depends in vertical direction. 0n the platei6 another plate i8 is vertically displaceably arranged and guided ontop by a driving pin I9 and below by a screw 20 both of which 10 membersslide in corresponding longitudinal slots of the plate I6. 1

Between the plates I6 and I8 the film I2 moves which is guided on itsupper edge by the springs 2I which are attached to the plate l 8 andpass through recesses 22 thereof into the longitudinal slots 23 of theplate I6. The lower edge of the nlm I2 isguided by pins 24 which projectfrom the plate I8 and engage slots in the plate I6. 25 designates anelongated clearance ofthe plate I6 20 located opposite a film feedingmeans which may consist of a wheel 26 fitted with rubber or teeth. 2'Iis an additional lens arranged in the casing I in the axis of the lenses6 and of the window I l.

The driving pin I9 extends into a recurring 25 groove 29 arranged on thecircumference of a wheel 28 and comprising three sections 29a, 29D, 29oof equal length which are superposed in staggered relation and whichpass over into each other by means of the oblique connections 29d; 30'I'he wheel 28 is supported by a shaft 30 disposed in the yoke I5 anddriven by a crank having the form of a cover 3| for the casing I andbeing provided with a handle 32.

'Ihe rotary motionof the shaft 30 is transmit- 3 5 -ted in. aconsiderably reduced manner by means of a cord drive and an intermediatewheel to a i wheel 33 which projects somewhat from the casof standardsize-without being rolled. Its width 45 is half that of standard fllm,and itis provided with threev superposed rows of pictures 35., 36, 31which are projected also transversely to the lon gitudinal direction. ofthe film. Under the rows of pictures a broad feeding strip 38 isprovided 50 which may be perforated.

means 26 and after the'lamp, 5 has been Switched 55 ,the arrow in Fig.

intermittently into the section 29o to returnagain through 29h to 29a,and so forth. "This causes a corresponding motion of the nlm plate I8which intermittently moves the nlm guided by it transversely to thelongitudinal direction thereof, so that the pictures of the threesuperposed rows 35, 36, 31 successively pass in front of the window I1into the light ray and are projected on an enlarged scale bythe lens 2lonto a screen, not shown. During the transverse motion the nlm I2 isalso gradually advanced due to the reduced drive of the nlm feedingmeans 26, so that the result of the combination of the longitudinal andtransverse motions is a zigzag-like motion of the rows of pictures 35,35, 31 through the nxed Vlight ray, as indicated by 5. The Wheel 33partly projecting from the casing I permits adjustment of the film I2independently 32, in which case two parts slide upon one another in thecord drive.

The plate 3| can be unscrewed from the shaft by being turned back. 'I he-various parts may consist of suitable material, such as wood, metal,

etc.

Wherever considerations of strength, etc. permit, light yet durableartincial resin masses are preferably employed. The driving and controlwheel 28 may be unitary or composite construction. `The cord in thereduction gear may consist of spiral wire.

I claim:

`1. A motion picture projector, 4comprising a small casing containing afixed optical equipment consisting of an electric lamp, a lensarrangement and current supply means, a guide plate, a nlm carrier plateguided on said guide plate and intermittently movable -transversely intoseveral positions, said carrier receiving and yguiding a substandardnlm` adapted to provided with at last three longitudinallysuperposedrows of pictures, a grooved disc arranged in the casingy and be drivenby a hand crank and coinprising sections of a groove arranged on itscircumference, which correspond to the number of rows of pictures andpass into 4one another, the position and displacement of said groovesections being arranged according to the rows of pictures, said nlmcarrier and groove being in driving connection by means 'of a drivingpin, a

feeding means disposed on the nlm guide plate for continuously moving`the nlm in longitudinal direction, said feeding means being in reducingdriving connection withthe drive of the groovsd disc, the electric lamp,a portion of the lens arrangement', and the current supply means beingmounted as a unit on a mount member and the nlml carrier with the guideplateiand the grooved disc being mounted as a unit o a second mountmember, said mount members into or removal therefrom.

of the crank drive `3 I ,v

`during said longitudinal movement being/detachably,` connected with thecasing for ready insertion` carrier for receiving and guiding a nlmstrip of substandard, width'provided with at least three longitudinallysuperposed rows of pictures and means for moving the nlm in transversedirections relative to the fixed optical equipment to exhibitsuccessively pictures of the superposed rows and simultaneously withsuch transverse movement moving the nlm longitudinally, the lamp and aportion of the lens -arrangement being mounted as a unit on amount-member and the nlm carrier and a portion of the operating meanstherefor being mounted as a unit on a second mount member, said mountmembers being detachably connected with said casing for ready insertioninto and removal therefrom.

3. A motion picture projector, comprising a small casing, a fixedoptical equipment consisting of a lamp and a lens arrangement, a nlm'carrier movably arranged relative to the optical equipment for receivingand guiding a nlm strip of substandard width provided with a pluralityof longitudinally superposed rows of pictures, means for longitudinallymoving the nlm in the carrier and means for simultaneously with andmoving the nlm carrier transversely tothe longitudinal direction of thenlm successively into the positions corresponding to the number of rowsof pictures relative to the nxed optical equipment, the nlm carriercomprising pins for guiding the lower edge of the nlm and spring membersfor guid-iA ing the upper edge ofthe nlm.

a nxed optical equipment consisting of -a lamp and a lens arrangement, anlm carrier for receiving and guiding a nlm strip of substandard widthprovided with at least three 1ongitudinally superposed `rows of picturesand means for moving the nlm in transverse direc-r tions relative to thenxedfoptical equipment to exhibit successively pictures of thesuperposed rows `and simultaneously with such transverse movement movingthe nlm longitudinally, the means. for moving the nlamentslongitudinally including a gear element projecting through the casingfor ready manual engagement for adjustment of the nlm.

5. A motion picture projector, comprising a small. casing, a nxedoptical equipment consist- "$5 4. A motion picture projector, comprisinga p small casing,

ing of a lamp and alens arrangement, a nlm carhandle for manualoperation.

Man ro sAssoLr nlm in transverse direc-1

